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The AAVSO International Database is a repository of variable star observations contributed by amateur and professional astronomers worldwide. Use the form below to search for observations of specific stars or by specific observers.

Enter list of star names, comma separated.
Enter a date in natural language, jd, or utc format.
Enter a date in natural language, jd, or utc format.
Separate multiple observers with commas.
Campaign overrides targets and dates.

Found 3990 records

# Target Observer Julian Date UTC Date Magnitude Uncertainty Band Type
1 rho Cas KSQ 2459384.3556 2021-06-18 20:32 4.7 N/A Visual Visual
2 rho Cas SMAI 2459384.3846 2021-06-18 21:13 5.858 0.007 Johnson B CCD
3 rho Cas SMAI 2459384.3800 2021-06-18 21:07 3.307 0.021 Cousins I CCD
4 rho Cas SMAI 2459384.3759 2021-06-18 21:01 3.686 0.030 Cousins R CCD
5 rho Cas SMAI 2459384.3892 2021-06-18 21:20 6.516 0.016 Johnson U CCD
6 rho Cas SMAI 2459384.3722 2021-06-18 20:55 4.539 0.004 Johnson V CCD
7 rho Cas MDP 2459385.8375 2021-06-20 08:05 4.5 N/A Visual Visual
8 rho Cas MED 2459388.4306 2021-06-22 22:20 4.3 N/A Visual Visual
9 rho Cas SLH 2459388.8750 2021-06-23 09:00 4.5 N/A Visual Visual
10 rho Cas WGEC 2459391.4325 2021-06-25 22:22 4.6346 0.0207 Tri-Color Green DSLR
11 rho Cas CKB 2459388.9299 2021-06-23 10:18 4.4 N/A Visual Visual
12 rho Cas SCRB 2459390.4166 2021-06-24 21:59 6.5358 0.0069 Tri-Color Green CCD
13 rho Cas SCRB 2459390.4167 2021-06-24 22:00 6.4816 0.0070 Tri-Color Green CCD
14 rho Cas SCRB 2459390.4169 2021-06-24 22:00 6.4048 0.0073 Tri-Color Green CCD
15 rho Cas SCRB 2459390.4170 2021-06-24 22:00 6.4452 0.0070 Tri-Color Green CCD
16 rho Cas SCRB 2459390.4173 2021-06-24 22:00 6.5031 0.0071 Tri-Color Green CCD
17 rho Cas SCRB 2459390.4174 2021-06-24 22:01 6.3886 0.0075 Tri-Color Green CCD
18 rho Cas SCRB 2459390.4175 2021-06-24 22:01 6.4656 0.0071 Tri-Color Green CCD
19 rho Cas SCRB 2459390.4177 2021-06-24 22:01 6.5803 0.0068 Tri-Color Green CCD
20 rho Cas SCRB 2459390.4178 2021-06-24 22:01 6.5086 0.0070 Tri-Color Green CCD
21 rho Cas SCRB 2459390.4180 2021-06-24 22:01 6.5441 0.0067 Tri-Color Green CCD
22 rho Cas SCRB 2459390.4182 2021-06-24 22:02 6.5908 0.0065 Tri-Color Green CCD
23 rho Cas SCRB 2459390.4184 2021-06-24 22:02 6.5513 0.0068 Tri-Color Green CCD
24 rho Cas SCRB 2459390.4186 2021-06-24 22:02 6.4919 0.0070 Tri-Color Green CCD
25 rho Cas SCRB 2459390.4187 2021-06-24 22:02 6.6173 0.0065 Tri-Color Green CCD